Biomethane pipelines are a type of infrastructure used to transport biomethane, which is a form of renewable energy generated from organic matter. Biomethane pipelines are typically constructed underground and can be up to several miles long. The pipeline contains a network of pipes that connect biogas production facilities with end-users such as power plants or natural gas distribution networks. The biomethane is transported through the pipeline in its gaseous state and is then converted into electricity or fed into the natural gas grid for use as fuel. Biomethane pipelines provide an efficient way to transport renewable energy over long distances, helping to reduce greenhouse gas emissions and increase the use of renewable sources of energy.